add iBeacon functionality
Dependencies: BLE_API mbed-dev-bin nRF51822
Fork of microbit-dal by
Diff: source/core/MicroBitListener.cpp
- Revision:
- 1:8aa5cdb4ab67
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/source/core/MicroBitListener.cpp Thu Apr 07 01:33:22 2016 +0100 @@ -0,0 +1,122 @@ +/* +The MIT License (MIT) + +Copyright (c) 2016 British Broadcasting Corporation. +This software is provided by Lancaster University by arrangement with the BBC. + +Permission is hereby granted, free of charge, to any person obtaining a +copy of this software and associated documentation files (the "Software"), +to deal in the Software without restriction, including without limitation +the rights to use, copy, modify, merge, publish, distribute, sublicense, +and/or sell copies of the Software, and to permit persons to whom the +Software is furnished to do so, subject to the following conditions: + +The above copyright notice and this permission notice shall be included in +all copies or substantial portions of the Software. + +THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL +THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER +LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING +FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +DEALINGS IN THE SOFTWARE. +*/ + +/** + * This structure defines a MicroBitListener used to invoke functions, or member + * functions if an instance of EventModel receives an event whose id and value + * match this MicroBitListener's id and value. + */ +#include "MicroBitConfig.h" +#include "MicroBitListener.h" + +/** + * Constructor. + * + * Create a new Message Bus Listener. + * + * @param id The ID of the component you want to listen to. + * + * @param value The event value you would like to listen to from that component + * + * @param handler A function pointer to call when the event is detected. + * + * @param flags User specified, implementation specific flags, that allow behaviour of this events listener + * to be tuned. + */ +MicroBitListener::MicroBitListener(uint16_t id, uint16_t value, void (*handler)(MicroBitEvent), uint16_t flags) +{ + this->id = id; + this->value = value; + this->cb = handler; + this->cb_arg = NULL; + this->flags = flags; + this->next = NULL; + this->evt_queue = NULL; +} + +/** + * Constructor. + * + * Create a new Message Bus Listener, this constructor accepts an additional + * parameter "arg", which is passed to the handler. + * + * @param id The ID of the component you want to listen to. + * + * @param value The event value you would like to listen to from that component + * + * @param handler A function pointer to call when the event is detected. + * + * @param arg A pointer to some data that will be given to the handler. + * + * @param flags User specified, implementation specific flags, that allow behaviour of this events listener + * to be tuned. + */ +MicroBitListener::MicroBitListener(uint16_t id, uint16_t value, void (*handler)(MicroBitEvent, void *), void* arg, uint16_t flags) +{ + this->id = id; + this->value = value; + this->cb_param = handler; + this->cb_arg = arg; + this->flags = flags | MESSAGE_BUS_LISTENER_PARAMETERISED; + this->next = NULL; + this->evt_queue = NULL; +} + +/** + * Destructor. Ensures all resources used by this listener are freed. + */ +MicroBitListener::~MicroBitListener() +{ + if(this->flags & MESSAGE_BUS_LISTENER_METHOD) + delete cb_method; +} + +/** + * Queues and event up to be processed. + * + * @param e The event to queue + */ +void MicroBitListener::queue(MicroBitEvent e) +{ + int queueDepth; + + MicroBitEventQueueItem *p = evt_queue; + + if (evt_queue == NULL) + evt_queue = new MicroBitEventQueueItem(e); + else + { + queueDepth = 1; + + while (p->next != NULL) + { + p = p->next; + queueDepth++; + } + + if (queueDepth < MESSAGE_BUS_LISTENER_MAX_QUEUE_DEPTH) + p->next = new MicroBitEventQueueItem(e); + } +}